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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2011 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: Primitive.html 906 2014-07-30 00:09:06Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.dellroad.stuff.java;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.lang.reflect.Method;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.util.Comparator;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.util.HashMap;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import java.util.HashSet;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import java.util.Set;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import java.util.regex.Pattern;<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>/**<a name="line.17"></a>
<span class="sourceLineNo">018</span> * Simple utility enumeration for working Java {@link Class} instances representing primitive types (including {@code void}).<a name="line.18"></a>
<span class="sourceLineNo">019</span> *<a name="line.19"></a>
<span class="sourceLineNo">020</span> * &lt;p&gt;<a name="line.20"></a>
<span class="sourceLineNo">021</span> * Instances of this class represent the eight Java primitive types plus {@code void}.<a name="line.21"></a>
<span class="sourceLineNo">022</span> * &lt;p/&gt;<a name="line.22"></a>
<span class="sourceLineNo">023</span> *<a name="line.23"></a>
<span class="sourceLineNo">024</span> * @param &lt;T&gt; Primitive wrapper type<a name="line.24"></a>
<span class="sourceLineNo">025</span> */<a name="line.25"></a>
<span class="sourceLineNo">026</span>public abstract class Primitive&lt;T&gt; implements Comparator&lt;T&gt; {<a name="line.26"></a>
<span class="sourceLineNo">027</span><a name="line.27"></a>
<span class="sourceLineNo">028</span>    /**<a name="line.28"></a>
<span class="sourceLineNo">029</span>     * Void type. The {@link #getDefaultValue}, {@link #compare compare()}, and {@link #parseValue parseValue()}<a name="line.29"></a>
<span class="sourceLineNo">030</span>     * methods always throw exceptions.<a name="line.30"></a>
<span class="sourceLineNo">031</span>     */<a name="line.31"></a>
<span class="sourceLineNo">032</span>    public static final Primitive&lt;Void&gt; VOID = new Primitive&lt;Void&gt;(Void.TYPE, Void.class, 'V', "") {<a name="line.32"></a>
<span class="sourceLineNo">033</span>        @Override<a name="line.33"></a>
<span class="sourceLineNo">034</span>        public &lt;R&gt; R visit(PrimitiveSwitch&lt;R&gt; pswitch) {<a name="line.34"></a>
<span class="sourceLineNo">035</span>            return pswitch.caseVoid();<a name="line.35"></a>
<span class="sourceLineNo">036</span>        }<a name="line.36"></a>
<span class="sourceLineNo">037</span>        @Override<a name="line.37"></a>
<span class="sourceLineNo">038</span>        public Void getDefaultValue() {<a name="line.38"></a>
<span class="sourceLineNo">039</span>            throw new UnsupportedOperationException();<a name="line.39"></a>
<span class="sourceLineNo">040</span>        }<a name="line.40"></a>
<span class="sourceLineNo">041</span>        @Override<a name="line.41"></a>
<span class="sourceLineNo">042</span>        public int compare(Void value1, Void value2) {<a name="line.42"></a>
<span class="sourceLineNo">043</span>            throw new NullPointerException();<a name="line.43"></a>
<span class="sourceLineNo">044</span>        }<a name="line.44"></a>
<span class="sourceLineNo">045</span>        @Override<a name="line.45"></a>
<span class="sourceLineNo">046</span>        protected Void doParseValue(String string) {<a name="line.46"></a>
<span class="sourceLineNo">047</span>            throw new IllegalArgumentException();<a name="line.47"></a>
<span class="sourceLineNo">048</span>        }<a name="line.48"></a>
<span class="sourceLineNo">049</span>    };<a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span>    /**<a name="line.51"></a>
<span class="sourceLineNo">052</span>     * Boolean type. String values must equal {@code "true"} or {@code "false"}.<a name="line.52"></a>
<span class="sourceLineNo">053</span>     */<a name="line.53"></a>
<span class="sourceLineNo">054</span>    public static final Primitive&lt;Boolean&gt; BOOLEAN = new Primitive&lt;Boolean&gt;(Boolean.TYPE, Boolean.class, 'Z', "true|false") {<a name="line.54"></a>
<span class="sourceLineNo">055</span>        @Override<a name="line.55"></a>
<span class="sourceLineNo">056</span>        public &lt;R&gt; R visit(PrimitiveSwitch&lt;R&gt; pswitch) {<a name="line.56"></a>
<span class="sourceLineNo">057</span>            return pswitch.caseBoolean();<a name="line.57"></a>
<span class="sourceLineNo">058</span>        }<a name="line.58"></a>
<span class="sourceLineNo">059</span>        @Override<a name="line.59"></a>
<span class="sourceLineNo">060</span>        public Boolean getDefaultValue() {<a name="line.60"></a>
<span class="sourceLineNo">061</span>            return false;<a name="line.61"></a>
<span class="sourceLineNo">062</span>        }<a name="line.62"></a>
<span class="sourceLineNo">063</span>        @Override<a name="line.63"></a>
<span class="sourceLineNo">064</span>        public int compare(Boolean value1, Boolean value2) {<a name="line.64"></a>
<span class="sourceLineNo">065</span>            return Boolean.compare(value1, value2);<a name="line.65"></a>
<span class="sourceLineNo">066</span>        }<a name="line.66"></a>
<span class="sourceLineNo">067</span>        @Override<a name="line.67"></a>
<span class="sourceLineNo">068</span>        protected Boolean doParseValue(String string) {<a name="line.68"></a>
<span class="sourceLineNo">069</span>            return Boolean.parseBoolean(string);<a name="line.69"></a>
<span class="sourceLineNo">070</span>        }<a name="line.70"></a>
<span class="sourceLineNo">071</span>    };<a name="line.71"></a>
<span class="sourceLineNo">072</span><a name="line.72"></a>
<span class="sourceLineNo">073</span>    /**<a name="line.73"></a>
<span class="sourceLineNo">074</span>     * Byte type. String values are parsed using {@link Byte#decode Byte.decode()}.<a name="line.74"></a>
<span class="sourceLineNo">075</span>     */<a name="line.75"></a>
<span class="sourceLineNo">076</span>    public static final Primitive&lt;Byte&gt; BYTE = new Primitive&lt;Byte&gt;(Byte.TYPE, Byte.class, 'B',<a name="line.76"></a>
<span class="sourceLineNo">077</span>      "(?i)(\\+|-)?(((0x|#)0*([A-F0-9]{1,2}))|(0+[0-7]{0,3})|([1-9][0-9]{0,2}))") {<a name="line.77"></a>
<span class="sourceLineNo">078</span>        @Override<a name="line.78"></a>
<span class="sourceLineNo">079</span>        public &lt;R&gt; R visit(PrimitiveSwitch&lt;R&gt; pswitch) {<a name="line.79"></a>
<span class="sourceLineNo">080</span>            return pswitch.caseByte();<a name="line.80"></a>
<span class="sourceLineNo">081</span>        }<a name="line.81"></a>
<span class="sourceLineNo">082</span>        @Override<a name="line.82"></a>
<span class="sourceLineNo">083</span>        public Byte getDefaultValue() {<a name="line.83"></a>
<span class="sourceLineNo">084</span>            return (byte)0;<a name="line.84"></a>
<span class="sourceLineNo">085</span>        }<a name="line.85"></a>
<span class="sourceLineNo">086</span>        @Override<a name="line.86"></a>
<span class="sourceLineNo">087</span>        public int compare(Byte value1, Byte value2) {<a name="line.87"></a>
<span class="sourceLineNo">088</span>            return Byte.compare(value1, value2);<a name="line.88"></a>
<span class="sourceLineNo">089</span>        }<a name="line.89"></a>
<span class="sourceLineNo">090</span>        @Override<a name="line.90"></a>
<span class="sourceLineNo">091</span>        protected Byte doParseValue(String string) {<a name="line.91"></a>
<span class="sourceLineNo">092</span>            return Byte.decode(string);<a name="line.92"></a>
<span class="sourceLineNo">093</span>        }<a name="line.93"></a>
<span class="sourceLineNo">094</span>    };<a name="line.94"></a>
<span class="sourceLineNo">095</span><a name="line.95"></a>
<span class="sourceLineNo">096</span>    /**<a name="line.96"></a>
<span class="sourceLineNo">097</span>     * Character type. String values must be exactly one character long.<a name="line.97"></a>
<span class="sourceLineNo">098</span>     */<a name="line.98"></a>
<span class="sourceLineNo">099</span>    public static final Primitive&lt;Character&gt; CHARACTER = new Primitive&lt;Character&gt;(Character.TYPE, Character.class, 'C', "(?s).") {<a name="line.99"></a>
<span class="sourceLineNo">100</span>        @Override<a name="line.100"></a>
<span class="sourceLineNo">101</span>        public &lt;R&gt; R visit(PrimitiveSwitch&lt;R&gt; pswitch) {<a name="line.101"></a>
<span class="sourceLineNo">102</span>            return pswitch.caseCharacter();<a name="line.102"></a>
<span class="sourceLineNo">103</span>        }<a name="line.103"></a>
<span class="sourceLineNo">104</span>        @Override<a name="line.104"></a>
<span class="sourceLineNo">105</span>        public Character getDefaultValue() {<a name="line.105"></a>
<span class="sourceLineNo">106</span>            return (char)0;<a name="line.106"></a>
<span class="sourceLineNo">107</span>        }<a name="line.107"></a>
<span class="sourceLineNo">108</span>        @Override<a name="line.108"></a>
<span class="sourceLineNo">109</span>        public int compare(Character value1, Character value2) {<a name="line.109"></a>
<span class="sourceLineNo">110</span>            return Character.compare(value1, value2);<a name="line.110"></a>
<span class="sourceLineNo">111</span>        }<a name="line.111"></a>
<span class="sourceLineNo">112</span>        @Override<a name="line.112"></a>
<span class="sourceLineNo">113</span>        protected Character doParseValue(String string) {<a name="line.113"></a>
<span class="sourceLineNo">114</span>            if (string.length() != 1)<a name="line.114"></a>
<span class="sourceLineNo">115</span>                throw new IllegalArgumentException("string has length " + string.length() + " != 1");<a name="line.115"></a>
<span class="sourceLineNo">116</span>            return Character.valueOf(string.charAt(0));<a name="line.116"></a>
<span class="sourceLineNo">117</span>        }<a name="line.117"></a>
<span class="sourceLineNo">118</span>    };<a name="line.118"></a>
<span class="sourceLineNo">119</span><a name="line.119"></a>
<span class="sourceLineNo">120</span>    /**<a name="line.120"></a>
<span class="sourceLineNo">121</span>     * Short type. String values are parsed using {@link Short#decode Short.decode()}.<a name="line.121"></a>
<span class="sourceLineNo">122</span>     */<a name="line.122"></a>
<span class="sourceLineNo">123</span>    public static final Primitive&lt;Short&gt; SHORT = new Primitive&lt;Short&gt;(Short.TYPE, Short.class, 'S',<a name="line.123"></a>
<span class="sourceLineNo">124</span>      "(?i)(\\+|-)?(((0x|#)0*([A-F0-9]{1,4}))|(0+[0-7]{0,6})|([1-9][0-9]{0,4}))") {<a name="line.124"></a>
<span class="sourceLineNo">125</span>        @Override<a name="line.125"></a>
<span class="sourceLineNo">126</span>        public &lt;R&gt; R visit(PrimitiveSwitch&lt;R&gt; pswitch) {<a name="line.126"></a>
<span class="sourceLineNo">127</span>            return pswitch.caseShort();<a name="line.127"></a>
<span class="sourceLineNo">128</span>        }<a name="line.128"></a>
<span class="sourceLineNo">129</span>        @Override<a name="line.129"></a>
<span class="sourceLineNo">130</span>        public Short getDefaultValue() {<a name="line.130"></a>
<span class="sourceLineNo">131</span>            return (short)0;<a name="line.131"></a>
<span class="sourceLineNo">132</span>        }<a name="line.132"></a>
<span class="sourceLineNo">133</span>        @Override<a name="line.133"></a>
<span class="sourceLineNo">134</span>        public int compare(Short value1, Short value2) {<a name="line.134"></a>
<span class="sourceLineNo">135</span>            return Short.compare(value1, value2);<a name="line.135"></a>
<span class="sourceLineNo">136</span>        }<a name="line.136"></a>
<span class="sourceLineNo">137</span>        @Override<a name="line.137"></a>
<span class="sourceLineNo">138</span>        protected Short doParseValue(String string) {<a name="line.138"></a>
<span class="sourceLineNo">139</span>            return Short.decode(string);<a name="line.139"></a>
<span class="sourceLineNo">140</span>        }<a name="line.140"></a>
<span class="sourceLineNo">141</span>    };<a name="line.141"></a>
<span class="sourceLineNo">142</span><a name="line.142"></a>
<span class="sourceLineNo">143</span>    /**<a name="line.143"></a>
<span class="sourceLineNo">144</span>     * Integer type. String values are parsed using {@link Integer#decode Integer.decode()}.<a name="line.144"></a>
<span class="sourceLineNo">145</span>     */<a name="line.145"></a>
<span class="sourceLineNo">146</span>    public static final Primitive&lt;Integer&gt; INTEGER = new Primitive&lt;Integer&gt;(Integer.TYPE, Integer.class, 'I',<a name="line.146"></a>
<span class="sourceLineNo">147</span>      "(?i)(\\+|-)?(((0x|#)0*([A-F0-9]{1,8}))|(0+[0-7]{0,11})|([1-9][0-9]{0,9}))") {<a name="line.147"></a>
<span class="sourceLineNo">148</span>        @Override<a name="line.148"></a>
<span class="sourceLineNo">149</span>        public &lt;R&gt; R visit(PrimitiveSwitch&lt;R&gt; pswitch) {<a name="line.149"></a>
<span class="sourceLineNo">150</span>            return pswitch.caseInteger();<a name="line.150"></a>
<span class="sourceLineNo">151</span>        }<a name="line.151"></a>
<span class="sourceLineNo">152</span>        @Override<a name="line.152"></a>
<span class="sourceLineNo">153</span>        public Integer getDefaultValue() {<a name="line.153"></a>
<span class="sourceLineNo">154</span>            return 0;<a name="line.154"></a>
<span class="sourceLineNo">155</span>        }<a name="line.155"></a>
<span class="sourceLineNo">156</span>        @Override<a name="line.156"></a>
<span class="sourceLineNo">157</span>        public int compare(Integer value1, Integer value2) {<a name="line.157"></a>
<span class="sourceLineNo">158</span>            return Integer.compare(value1, value2);<a name="line.158"></a>
<span class="sourceLineNo">159</span>        }<a name="line.159"></a>
<span class="sourceLineNo">160</span>        @Override<a name="line.160"></a>
<span class="sourceLineNo">161</span>        protected Integer doParseValue(String string) {<a name="line.161"></a>
<span class="sourceLineNo">162</span>            return Integer.decode(string);<a name="line.162"></a>
<span class="sourceLineNo">163</span>        }<a name="line.163"></a>
<span class="sourceLineNo">164</span>    };<a name="line.164"></a>
<span class="sourceLineNo">165</span><a name="line.165"></a>
<span class="sourceLineNo">166</span>    /**<a name="line.166"></a>
<span class="sourceLineNo">167</span>     * Float type. String values are parsed using {@link Float#parseFloat Float.parseFloat()}.<a name="line.167"></a>
<span class="sourceLineNo">168</span>     */<a name="line.168"></a>
<span class="sourceLineNo">169</span>    public static final Primitive&lt;Float&gt; FLOAT = new Primitive&lt;Float&gt;(Float.TYPE, Float.class, 'F', DoubleFormat.REGEX) {<a name="line.169"></a>
<span class="sourceLineNo">170</span>        @Override<a name="line.170"></a>
<span class="sourceLineNo">171</span>        public &lt;R&gt; R visit(PrimitiveSwitch&lt;R&gt; pswitch) {<a name="line.171"></a>
<span class="sourceLineNo">172</span>            return pswitch.caseFloat();<a name="line.172"></a>
<span class="sourceLineNo">173</span>        }<a name="line.173"></a>
<span class="sourceLineNo">174</span>        @Override<a name="line.174"></a>
<span class="sourceLineNo">175</span>        public Float getDefaultValue() {<a name="line.175"></a>
<span class="sourceLineNo">176</span>            return 0.0f;<a name="line.176"></a>
<span class="sourceLineNo">177</span>        }<a name="line.177"></a>
<span class="sourceLineNo">178</span>        @Override<a name="line.178"></a>
<span class="sourceLineNo">179</span>        public int compare(Float value1, Float value2) {<a name="line.179"></a>
<span class="sourceLineNo">180</span>            return Float.compare(value1, value2);<a name="line.180"></a>
<span class="sourceLineNo">181</span>        }<a name="line.181"></a>
<span class="sourceLineNo">182</span>        @Override<a name="line.182"></a>
<span class="sourceLineNo">183</span>        protected Float doParseValue(String string) {<a name="line.183"></a>
<span class="sourceLineNo">184</span>            return Float.parseFloat(string);<a name="line.184"></a>
<span class="sourceLineNo">185</span>        }<a name="line.185"></a>
<span class="sourceLineNo">186</span>    };<a name="line.186"></a>
<span class="sourceLineNo">187</span><a name="line.187"></a>
<span class="sourceLineNo">188</span>    /**<a name="line.188"></a>
<span class="sourceLineNo">189</span>     * Long type. String values are parsed using {@link Long#decode Long.decode()}.<a name="line.189"></a>
<span class="sourceLineNo">190</span>     */<a name="line.190"></a>
<span class="sourceLineNo">191</span>    public static final Primitive&lt;Long&gt; LONG = new Primitive&lt;Long&gt;(Long.TYPE, Long.class, 'J',<a name="line.191"></a>
<span class="sourceLineNo">192</span>      "(?i)(\\+|-)?(((0x|#)0*([A-F0-9]{1,16}))|(0+[0-7]{0,22})|([1-9][0-9]{0,18}))") {<a name="line.192"></a>
<span class="sourceLineNo">193</span>        @Override<a name="line.193"></a>
<span class="sourceLineNo">194</span>        public &lt;R&gt; R visit(PrimitiveSwitch&lt;R&gt; pswitch) {<a name="line.194"></a>
<span class="sourceLineNo">195</span>            return pswitch.caseLong();<a name="line.195"></a>
<span class="sourceLineNo">196</span>        }<a name="line.196"></a>
<span class="sourceLineNo">197</span>        @Override<a name="line.197"></a>
<span class="sourceLineNo">198</span>        public Long getDefaultValue() {<a name="line.198"></a>
<span class="sourceLineNo">199</span>            return 0L;<a name="line.199"></a>
<span class="sourceLineNo">200</span>        }<a name="line.200"></a>
<span class="sourceLineNo">201</span>        @Override<a name="line.201"></a>
<span class="sourceLineNo">202</span>        public int compare(Long value1, Long value2) {<a name="line.202"></a>
<span class="sourceLineNo">203</span>            return Long.compare(value1, value2);<a name="line.203"></a>
<span class="sourceLineNo">204</span>        }<a name="line.204"></a>
<span class="sourceLineNo">205</span>        @Override<a name="line.205"></a>
<span class="sourceLineNo">206</span>        protected Long doParseValue(String string) {<a name="line.206"></a>
<span class="sourceLineNo">207</span>            return Long.decode(string);<a name="line.207"></a>
<span class="sourceLineNo">208</span>        }<a name="line.208"></a>
<span class="sourceLineNo">209</span>    };<a name="line.209"></a>
<span class="sourceLineNo">210</span><a name="line.210"></a>
<span class="sourceLineNo">211</span>    /**<a name="line.211"></a>
<span class="sourceLineNo">212</span>     * Double type. String values are parsed using {@link Double#parseDouble Double.parseDouble()}.<a name="line.212"></a>
<span class="sourceLineNo">213</span>     */<a name="line.213"></a>
<span class="sourceLineNo">214</span>    public static final Primitive&lt;Double&gt; DOUBLE = new Primitive&lt;Double&gt;(Double.TYPE, Double.class, 'D', DoubleFormat.REGEX) {<a name="line.214"></a>
<span class="sourceLineNo">215</span>        @Override<a name="line.215"></a>
<span class="sourceLineNo">216</span>        public &lt;R&gt; R visit(PrimitiveSwitch&lt;R&gt; pswitch) {<a name="line.216"></a>
<span class="sourceLineNo">217</span>            return pswitch.caseDouble();<a name="line.217"></a>
<span class="sourceLineNo">218</span>        }<a name="line.218"></a>
<span class="sourceLineNo">219</span>        @Override<a name="line.219"></a>
<span class="sourceLineNo">220</span>        public Double getDefaultValue() {<a name="line.220"></a>
<span class="sourceLineNo">221</span>            return 0.0;<a name="line.221"></a>
<span class="sourceLineNo">222</span>        }<a name="line.222"></a>
<span class="sourceLineNo">223</span>        @Override<a name="line.223"></a>
<span class="sourceLineNo">224</span>        public int compare(Double value1, Double value2) {<a name="line.224"></a>
<span class="sourceLineNo">225</span>            return Double.compare(value1, value2);<a name="line.225"></a>
<span class="sourceLineNo">226</span>        }<a name="line.226"></a>
<span class="sourceLineNo">227</span>        @Override<a name="line.227"></a>
<span class="sourceLineNo">228</span>        protected Double doParseValue(String string) {<a name="line.228"></a>
<span class="sourceLineNo">229</span>            return Double.parseDouble(string);<a name="line.229"></a>
<span class="sourceLineNo">230</span>        }<a name="line.230"></a>
<span class="sourceLineNo">231</span>    };<a name="line.231"></a>
<span class="sourceLineNo">232</span><a name="line.232"></a>
<span class="sourceLineNo">233</span>    private static HashMap&lt;Class&lt;?&gt;, Primitive&lt;?&gt;&gt; classMap;<a name="line.233"></a>
<span class="sourceLineNo">234</span><a name="line.234"></a>
<span class="sourceLineNo">235</span>    private final Class&lt;T&gt; primType;<a name="line.235"></a>
<span class="sourceLineNo">236</span>    private final Class&lt;T&gt; wrapType;<a name="line.236"></a>
<span class="sourceLineNo">237</span>    private final char letter;<a name="line.237"></a>
<span class="sourceLineNo">238</span>    private final Pattern parsePattern;<a name="line.238"></a>
<span class="sourceLineNo">239</span><a name="line.239"></a>
<span class="sourceLineNo">240</span>    Primitive(Class&lt;T&gt; primType, Class&lt;T&gt; wrapType, char letter, String parsePattern) {<a name="line.240"></a>
<span class="sourceLineNo">241</span>        this.primType = primType;<a name="line.241"></a>
<span class="sourceLineNo">242</span>        this.wrapType = wrapType;<a name="line.242"></a>
<span class="sourceLineNo">243</span>        this.letter = letter;<a name="line.243"></a>
<span class="sourceLineNo">244</span>        this.parsePattern = parsePattern != null ? Pattern.compile(parsePattern) : null;<a name="line.244"></a>
<span class="sourceLineNo">245</span>        if (Primitive.classMap == null)<a name="line.245"></a>
<span class="sourceLineNo">246</span>            Primitive.classMap = new HashMap&lt;Class&lt;?&gt;, Primitive&lt;?&gt;&gt;();<a name="line.246"></a>
<span class="sourceLineNo">247</span>        Primitive.classMap.put(primType, this);<a name="line.247"></a>
<span class="sourceLineNo">248</span>        Primitive.classMap.put(wrapType, this);<a name="line.248"></a>
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<span class="sourceLineNo">250</span><a name="line.250"></a>
<span class="sourceLineNo">251</span>    public abstract &lt;R&gt; R visit(PrimitiveSwitch&lt;R&gt; pswitch);<a name="line.251"></a>
<span class="sourceLineNo">252</span><a name="line.252"></a>
<span class="sourceLineNo">253</span>    /**<a name="line.253"></a>
<span class="sourceLineNo">254</span>     * Get this primitive's default value.<a name="line.254"></a>
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<span class="sourceLineNo">259</span>     * Get the short name for this primitive type, e.g., "int".<a name="line.259"></a>
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<span class="sourceLineNo">262</span>        return this.primType.getName();<a name="line.262"></a>
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<span class="sourceLineNo">264</span><a name="line.264"></a>
<span class="sourceLineNo">265</span>    /**<a name="line.265"></a>
<span class="sourceLineNo">266</span>     * Get the long name for this primitive type, e.g., "Integer".<a name="line.266"></a>
<span class="sourceLineNo">267</span>     * Also the simple name of the wrapper type.<a name="line.267"></a>
<span class="sourceLineNo">268</span>     */<a name="line.268"></a>
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<span class="sourceLineNo">270</span>        return this.wrapType.getSimpleName();<a name="line.270"></a>
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<span class="sourceLineNo">272</span><a name="line.272"></a>
<span class="sourceLineNo">273</span>    /**<a name="line.273"></a>
<span class="sourceLineNo">274</span>     * Get the single character descriptor for this primitive type, e.g., "I".<a name="line.274"></a>
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<span class="sourceLineNo">277</span>        return this.letter;<a name="line.277"></a>
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<span class="sourceLineNo">279</span><a name="line.279"></a>
<span class="sourceLineNo">280</span>    /**<a name="line.280"></a>
<span class="sourceLineNo">281</span>     * Get the {@link Class} object representing this primitive type, e.g., {@code Integer.TYPE}.<a name="line.281"></a>
<span class="sourceLineNo">282</span>     */<a name="line.282"></a>
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<span class="sourceLineNo">286</span><a name="line.286"></a>
<span class="sourceLineNo">287</span>    /**<a name="line.287"></a>
<span class="sourceLineNo">288</span>     * Get the wrapper {@link Class} object for this primitive type, e.g., {@code Integer.class}.<a name="line.288"></a>
<span class="sourceLineNo">289</span>     */<a name="line.289"></a>
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<span class="sourceLineNo">293</span><a name="line.293"></a>
<span class="sourceLineNo">294</span>    /**<a name="line.294"></a>
<span class="sourceLineNo">295</span>     * Get a regular expression that matches all allowed inputs to {@link #parseValue parseValue()}.<a name="line.295"></a>
<span class="sourceLineNo">296</span>     * The returned pattern may also accept some values that {@link #parseValue parseValue()} rejects,<a name="line.296"></a>
<span class="sourceLineNo">297</span>     * such as {@code 32768} for a {@code short}.<a name="line.297"></a>
<span class="sourceLineNo">298</span>     */<a name="line.298"></a>
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<span class="sourceLineNo">301</span>            throw new UnsupportedOperationException();<a name="line.301"></a>
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<span class="sourceLineNo">304</span><a name="line.304"></a>
<span class="sourceLineNo">305</span>    /**<a name="line.305"></a>
<span class="sourceLineNo">306</span>     * Get the wrapper class' "unwrap" method for this primitive type, e.g., {@code Integer.intValue()}.<a name="line.306"></a>
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<span class="sourceLineNo">312</span>            throw new RuntimeException(e);<a name="line.312"></a>
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<span class="sourceLineNo">315</span><a name="line.315"></a>
<span class="sourceLineNo">316</span>    /**<a name="line.316"></a>
<span class="sourceLineNo">317</span>     * Compare two primitive values.<a name="line.317"></a>
<span class="sourceLineNo">318</span>     *<a name="line.318"></a>
<span class="sourceLineNo">319</span>     * @throws NullPointerException if either value is null<a name="line.319"></a>
<span class="sourceLineNo">320</span>     */<a name="line.320"></a>
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<span class="sourceLineNo">322</span>    public abstract int compare(T value1, T value2);<a name="line.322"></a>
<span class="sourceLineNo">323</span><a name="line.323"></a>
<span class="sourceLineNo">324</span>    /**<a name="line.324"></a>
<span class="sourceLineNo">325</span>     * Parse a string-encoded value of this instance.<a name="line.325"></a>
<span class="sourceLineNo">326</span>     * This method is guaranteed to accept all possible return values from the primitive's {@link #toString},<a name="line.326"></a>
<span class="sourceLineNo">327</span>     * and possibly other reasonable inputs (e.g., hex and octal values for integral types).<a name="line.327"></a>
<span class="sourceLineNo">328</span>     *<a name="line.328"></a>
<span class="sourceLineNo">329</span>     * @param string string representation of a value<a name="line.329"></a>
<span class="sourceLineNo">330</span>     * @throws IllegalArgumentException if {@code string} is null<a name="line.330"></a>
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<span class="sourceLineNo">332</span>     */<a name="line.332"></a>
<span class="sourceLineNo">333</span>    public T parseValue(String string) {<a name="line.333"></a>
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<span class="sourceLineNo">336</span>        return this.doParseValue(string);<a name="line.336"></a>
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<span class="sourceLineNo">338</span><a name="line.338"></a>
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<span class="sourceLineNo">340</span><a name="line.340"></a>
<span class="sourceLineNo">341</span>    /**<a name="line.341"></a>
<span class="sourceLineNo">342</span>     * Get the instance with the given name (e.g., {@code "void"}, {@code "int"}, etc.).<a name="line.342"></a>
<span class="sourceLineNo">343</span>     *<a name="line.343"></a>
<span class="sourceLineNo">344</span>     * @param name instance short name<a name="line.344"></a>
<span class="sourceLineNo">345</span>     * @return corresponding instance, or null if name does not correspond to any {@link Primitive} instance<a name="line.345"></a>
<span class="sourceLineNo">346</span>     * @throws IllegalArgumentException if {@code name} is null<a name="line.346"></a>
<span class="sourceLineNo">347</span>     */<a name="line.347"></a>
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<span class="sourceLineNo">349</span>        if (name == null)<a name="line.349"></a>
<span class="sourceLineNo">350</span>            throw new IllegalArgumentException("null name");<a name="line.350"></a>
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<span class="sourceLineNo">352</span>            if (name.equals(primitive.getName()))<a name="line.352"></a>
<span class="sourceLineNo">353</span>                return primitive;<a name="line.353"></a>
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<span class="sourceLineNo">355</span>        return null;<a name="line.355"></a>
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<span class="sourceLineNo">357</span><a name="line.357"></a>
<span class="sourceLineNo">358</span>    /**<a name="line.358"></a>
<span class="sourceLineNo">359</span>     * Get all instances of this class.<a name="line.359"></a>
<span class="sourceLineNo">360</span>     *<a name="line.360"></a>
<span class="sourceLineNo">361</span>     * @return a modifiable set containing all instances; modifications have no effect on this class<a name="line.361"></a>
<span class="sourceLineNo">362</span>     */<a name="line.362"></a>
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<span class="sourceLineNo">366</span><a name="line.366"></a>
<span class="sourceLineNo">367</span>    /**<a name="line.367"></a>
<span class="sourceLineNo">368</span>     * Get the value corresponding to the given Java primitive or primitive wrapper type.<a name="line.368"></a>
<span class="sourceLineNo">369</span>     *<a name="line.369"></a>
<span class="sourceLineNo">370</span>     * @return the {@link Primitive} corresponding to {@code c}, or {@code null}<a name="line.370"></a>
<span class="sourceLineNo">371</span>     *         if {@code c} is not a primitive or primitive wrapper type<a name="line.371"></a>
<span class="sourceLineNo">372</span>     */<a name="line.372"></a>
<span class="sourceLineNo">373</span>    public static Primitive&lt;?&gt; get(Class&lt;?&gt; c) {<a name="line.373"></a>
<span class="sourceLineNo">374</span>        return Primitive.classMap.get(c);<a name="line.374"></a>
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<span class="sourceLineNo">376</span><a name="line.376"></a>
<span class="sourceLineNo">377</span>    // This is put into an inner class to avoid initialization ordering problems<a name="line.377"></a>
<span class="sourceLineNo">378</span>    private static final class DoubleFormat {<a name="line.378"></a>
<span class="sourceLineNo">379</span><a name="line.379"></a>
<span class="sourceLineNo">380</span>        private static final String DIGITS = "(\\p{Digit}+)";<a name="line.380"></a>
<span class="sourceLineNo">381</span><a name="line.381"></a>
<span class="sourceLineNo">382</span>        private static final String HEX_DIGITS = "(\\p{XDigit}+)";<a name="line.382"></a>
<span class="sourceLineNo">383</span><a name="line.383"></a>
<span class="sourceLineNo">384</span>        // an exponent is 'e' or 'E' followed by an optionally<a name="line.384"></a>
<span class="sourceLineNo">385</span>        // signed decimal integer.<a name="line.385"></a>
<span class="sourceLineNo">386</span>        private static final String EXPONENT = "[eE][+-]?" + DIGITS;<a name="line.386"></a>
<span class="sourceLineNo">387</span><a name="line.387"></a>
<span class="sourceLineNo">388</span>        private static final String REGEX =<a name="line.388"></a>
<span class="sourceLineNo">389</span>          "[+-]?("              // Optional sign character<a name="line.389"></a>
<span class="sourceLineNo">390</span>          + "NaN|"              // "NaN" string<a name="line.390"></a>
<span class="sourceLineNo">391</span>          + "Infinity|"         // "Infinity" string<a name="line.391"></a>
<span class="sourceLineNo">392</span><a name="line.392"></a>
<span class="sourceLineNo">393</span>          // A decimal floating-point string representing a finite positive<a name="line.393"></a>
<span class="sourceLineNo">394</span>          // number without a leading sign has at most five basic pieces:<a name="line.394"></a>
<span class="sourceLineNo">395</span>          // Digits . Digits ExponentPart FloatTypeSuffix<a name="line.395"></a>
<span class="sourceLineNo">396</span>          //<a name="line.396"></a>
<span class="sourceLineNo">397</span>          // Since this method allows integer-only strings as input<a name="line.397"></a>
<span class="sourceLineNo">398</span>          // in addition to strings of floating-point literals, the<a name="line.398"></a>
<span class="sourceLineNo">399</span>          // two sub-patterns below are simplifications of the grammar<a name="line.399"></a>
<span class="sourceLineNo">400</span>          // productions from the Java Language Specification, 2nd<a name="line.400"></a>
<span class="sourceLineNo">401</span>          // edition, section 3.10.2.<a name="line.401"></a>
<span class="sourceLineNo">402</span><a name="line.402"></a>
<span class="sourceLineNo">403</span>          // Digits ._opt Digits_opt ExponentPart_opt FloatTypeSuffix_opt<a name="line.403"></a>
<span class="sourceLineNo">404</span>          + "(((" + DIGITS + "(\\.)?(" + DIGITS + "?)(" + EXPONENT + ")?)|"<a name="line.404"></a>
<span class="sourceLineNo">405</span><a name="line.405"></a>
<span class="sourceLineNo">406</span>          // . Digits ExponentPart_opt FloatTypeSuffix_opt<a name="line.406"></a>
<span class="sourceLineNo">407</span>          + "(\\.(" + DIGITS + ")(" + EXPONENT + ")?)|"<a name="line.407"></a>
<span class="sourceLineNo">408</span><a name="line.408"></a>
<span class="sourceLineNo">409</span>          // Hexadecimal strings<a name="line.409"></a>
<span class="sourceLineNo">410</span>          + "(("<a name="line.410"></a>
<span class="sourceLineNo">411</span>            // 0[xX] HexDigits ._opt BinaryExponent FloatTypeSuffix_opt<a name="line.411"></a>
<span class="sourceLineNo">412</span>            + "(0[xX]" + HEX_DIGITS + "(\\.)?)|"<a name="line.412"></a>
<span class="sourceLineNo">413</span><a name="line.413"></a>
<span class="sourceLineNo">414</span>            // 0[xX] HexDigits_opt . HexDigits BinaryExponent FloatTypeSuffix_opt<a name="line.414"></a>
<span class="sourceLineNo">415</span>            + "(0[xX]" + HEX_DIGITS + "?(\\.)" + HEX_DIGITS + ")"<a name="line.415"></a>
<span class="sourceLineNo">416</span>             + ")[pP][+-]?" + DIGITS + "))" + "))";<a name="line.416"></a>
<span class="sourceLineNo">417</span><a name="line.417"></a>
<span class="sourceLineNo">418</span>        private DoubleFormat() {<a name="line.418"></a>
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<span class="sourceLineNo">421</span><a name="line.421"></a>
<span class="sourceLineNo">422</span>    @Override<a name="line.422"></a>
<span class="sourceLineNo">423</span>    public String toString() {<a name="line.423"></a>
<span class="sourceLineNo">424</span>        return this.wrapType.getSimpleName().toUpperCase();<a name="line.424"></a>
<span class="sourceLineNo">425</span>    }<a name="line.425"></a>
<span class="sourceLineNo">426</span>}<a name="line.426"></a>
<span class="sourceLineNo">427</span><a name="line.427"></a>




























































</pre>
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